((function (window, document) {
    var version = '3.6.2pre';
    var options = window.html5 || {
    };
    var reSkip = /^<|^(?:button|map|select|textarea|object|iframe|option|optgroup)$/i;
    var saveClones = /^(?:a|b|code|div|fieldset|h1|h2|h3|h4|h5|h6|i|label|li|ol|p|q|span|strong|style|table|tbody|td|th|tr|ul)$/i;
    var supportsHtml5Styles;
    var expando = '_html5shiv';
    var expanID = 0;
    var expandoData = {
    };
    var supportsUnknownElements;
    ((function () {
        try  {
            var a = document.createElement('a');
            a.innerHTML = '<xyz></xyz>';
            supportsHtml5Styles = ('hidden' in a);
            supportsUnknownElements = a.childNodes.length == 1 || ((function () {
                (document.createElement)('a');
                var frag = document.createDocumentFragment();
                return (typeof frag.cloneNode == 'undefined' || typeof frag.createDocumentFragment == 'undefined' || typeof frag.createElement == 'undefined');
            })());
        } catch (e) {
            supportsHtml5Styles = true;
            supportsUnknownElements = true;
        }
    })());
    function addStyleSheet(ownerDocument, cssText) {
        var p = ownerDocument.createElement('p'), parent = ownerDocument.getElementsByTagName('head')[0] || ownerDocument.documentElement;
        p.innerHTML = 'x<style>' + cssText + '</style>';
        return parent.insertBefore(p.lastChild, parent.firstChild);
    }
    function getElements() {
        var elements = html5.elements;
        return typeof elements == 'string' ? elements.split(' ') : elements;
    }
    function getExpandoData(ownerDocument) {
        var data = expandoData[ownerDocument[expando]];
        if(!data) {
            data = {
            };
            expanID++;
            ownerDocument[expando] = expanID;
            expandoData[expanID] = data;
        }
        return data;
    }
    function createElement(nodeName, ownerDocument, data) {
        if(!ownerDocument) {
            ownerDocument = document;
        }
        if(supportsUnknownElements) {
            return ownerDocument.createElement(nodeName);
        }
        if(!data) {
            data = getExpandoData(ownerDocument);
        }
        var node;
        if(data.cache[nodeName]) {
            node = data.cache[nodeName].cloneNode();
        } else if(saveClones.test(nodeName)) {
            node = (data.cache[nodeName] = data.createElem(nodeName)).cloneNode();
        } else {
            node = data.createElem(nodeName);
        }
        return node.canHaveChildren && !reSkip.test(nodeName) ? data.frag.appendChild(node) : node;
    }
    function createDocumentFragment(ownerDocument, data) {
        if(!ownerDocument) {
            ownerDocument = document;
        }
        if(supportsUnknownElements) {
            return ownerDocument.createDocumentFragment();
        }
        data = data || getExpandoData(ownerDocument);
        var clone = data.frag.cloneNode(), i = 0, elems = getElements(), l = elems.length;
        for(; i < l; i++) {
            clone.createElement(elems[i]);
        }
        return clone;
    }
    function shivMethods(ownerDocument, data) {
        if(!data.cache) {
            data.cache = {
            };
            data.createElem = ownerDocument.createElement;
            data.createFrag = ownerDocument.createDocumentFragment;
            data.frag = data.createFrag();
        }
        ownerDocument.createElement = function (nodeName) {
            if(!html5.shivMethods) {
                return data.createElem(nodeName);
            }
            return createElement(nodeName, ownerDocument, data);
        };
        ownerDocument.createDocumentFragment = Function('h,f', 'return function(){' + 'var n=f.cloneNode(),c=n.createElement;' + 'h.shivMethods&&(' + getElements().join().replace(/\w+/g, function (nodeName) {
            data.createElem(nodeName);
            data.frag.createElement(nodeName);
            return 'c("' + nodeName + '")';
        }) + ');return n}')(html5, data.frag);
    }
    function shivDocument(ownerDocument) {
        if(!ownerDocument) {
            ownerDocument = document;
        }
        var data = getExpandoData(ownerDocument);
        if(html5.shivCSS && !supportsHtml5Styles && !data.hasCSS) {
            data.hasCSS = !!addStyleSheet(ownerDocument, 'article,aside,figcaption,figure,footer,header,hgroup,main,nav,section{display:block}' + 'mark{background:#FF0;color:#000}');
        }
        if(!supportsUnknownElements) {
            shivMethods(ownerDocument, data);
        }
        return ownerDocument;
    }
    var html5 = {
        'elements': options.elements || 'abbr article aside audio bdi canvas data datalist details figcaption figure footer header hgroup main mark meter nav output progress section summary time video',
        'version': version,
        'shivCSS': (options.shivCSS !== false),
        'supportsUnknownElements': supportsUnknownElements,
        'shivMethods': (options.shivMethods !== false),
        'type': 'default',
        'shivDocument': shivDocument,
        createElement: createElement,
        createDocumentFragment: createDocumentFragment
    };
    window.html5 = html5;
    shivDocument(document);
})(this, document));
